"Backblaze Hard Drive Stats Q2 2019"
https://www.backblaze.com/blog/hard-...stats-q2-2019/

"As of June 30, 2019, Backblaze had 110,640 spinning hard drives in our
ever-expanding cloud storage ecosystem. Of that number, there were 1,980
boot drives and 108,660 data drives. This review looks at the Q2 2019
and lifetime hard drive failure rates of the data drive models currently
in operation in our data centers. We’ll also say goodbye to a couple of
drive models that have been around for several years, take a look at how
our 14 TB Toshiba drives are doing (spoiler alert: great), and along the
way we’ll provide a handful of insights and observations from inside our
storage cloud."

Lynn